Die-casting machine



April 14, 1925.

J. 8058 ET AL DIE CASTING MACHINE Filed Feb. 18L 1922 13 Sheets-Sheet 1 avwmtow/ Jseph 5055 3513 61am Louis /7. Morin I film @zzva m M "W 16 She'etS- S hEt' 5 I Jseph 5055. Louis H Norm,

J soss ET AL DIE CASTING MACHINE.

filed Feb. 18. 192;

$51 Meir Game/ A MUN April, 1925.

Q 1,533,617 "J. 5055 ET AL DIE CASTING marina Filed F05. 18. I922 13 she ets shet 4 J'oeph 5086. Louis h. Morin.

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1,533,617 'J. 5085 ET AL DIE CASTING MACHINE Filed Feb. 18. 1922 13 Shets-$het 6 gum/atom Jb'ssph 5055.

' Louzis H. Morin. 3516, their r April 14, 1925.

J. 5055 ET AL DIE CASTING MACHINE Filed Feb. 18, 1922 15 Sheets-Sheet 7 511mm for/a. Joseph 5055,

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1,533,617 J. soss ET AL DIE CASJ'I'ING MACHINE r1194 Feb. 1s. 1922 1a Sheets-Sheet 8 5440014 tow Jbseph 5066,

Louis h. Morin,

theirum April 14, 1925. 1,533,617

J. 5055 ET AL DIE CASTING MACHINE Filed Feb. 18. 1922 I 1s sneiets-sheet 9 gwumtom Jbseph 5085 02616 /7. Moran April 14, 1925. v I 1,533,617

J. soss ET Al.-

DIE CASTING MACHINE I Filed m. 18; 1922 1s Sh'eets- Sh t' 12' anventom/ 'Jbseph 505s Y HM 95 their-Shrew April 14, 1925.

J. 5055 ET AL DIE CASTING MACHINE Filed Feb. .18. 19;:

13 Sheets-Sheet 13 avweutow,

505$ $51 fheir1bt Lamb H M Patented Apr. 14, 1925. i

UNITED STATES 1,533,617 PATENT OFFICE.

JOSEPH SOSS AND LOUIS H. MORIN, NEW YORK, N. Y., A'SSIGNORS TO SOSS MANU- FACTURING C0., OF BROOKLYN, NEW YORK, A CORPORATION OF MAINE.

DIE-CASTING MACHINE.

Applicationfiled February 18, 1922. Serial No. 537,419.

To all whom. it may concern:

Be it known that we, 'J osnrn Soss and Lows H.-Monm, citizens of the United States, and residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Die-Casting Machines, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to die-casting machines, or machines designed for use in the manufacture of die-cast products of various kinds and classes, and the object of our invention is to provide a machine of this class which is automatic in operation, that is to say, the operative parts of our machine are automatically and mechanically moved into their several positions in the formation of die-castings; a further object being to provide means for controlling the operation of the machine; a still further object being to provide means for holding and locking the dies or die holders of the machine in their operative position; and a still further object being to provide automatic-ally operated means for passing molten metal into the die or dies supported in the machine; and with these and other objects in view the invention consists in a machine of the class and for the purpose specified which is simple in construction and operation and efficient in use, and which is constructed and operated as hereinafter described and claimed.

The invention is fully disclosed in the follmving specification, of which the accompanying drawings term a part, in which the separate parts of our improvement are designated by suitable reference characters in each of the views, and in which Fig. 1 is a side View of the complete machine and showing the parts thereof in a normal or inoperative position;

Fig. 2 a view similar to Fig. 1 but showing only a part of the construction and on an enlarged scale;

Fig. 3 a plan "low of the construction shown in Fig. 2;

Fig. 1 a view similar to Fig. 1 but showing another part of the machine on an enlarged scale;

Fig. 5 a plan view of the construction shown in Fig. 4:;

Fig. 6 a partial section on the line 6-6 of Fig. 5 with parts of the construction shown in different positions;

Fig. 7 a view similar to Fig. 6 with parts of the construction shown in different positions and indicating the method of passing molten metal into a die mounted in the machine;

Fig. 8 an end view of the machine as shown in Fig. 2 of the drawing;

Fig. 9 a diagrammatic sectional viewshowing the operation of the clutch mechanism of the machine;

Fig. 9 a sectional detail view of a part of the clutch mechanism which is not shown in Fig. 9;

Fig. 9 a detail view of a part of the con struction shown in Fig. 9;

Fig. 10 a transverse sectional view through an air valve employed in the construction shown in. Figs. 1 and 1 of the drawing and showing the same in an operative position;

Figs. 11, 12 and 13 are diagrammatic detail views of die supporting or holding operating mechanisms and showing the several operative positions thereof;

Fig. 1 1 a diagrammatic View of the air vzltlve operating mechanism which we em- P y;

Figs. 15 and 16 diagrammatic detail views of the supplemental frame operating mechanism of the machine which we employ and showing the different positions thereof; and,

Fig. 17 a view showing perspectives of a number of links, levers, couplings and the like which we employ.

Heretofore it has been the custom to provide die casting machines of the class and for the purpose specified with means adapt-- ed to be manually operated for moving the various parts of the machine, as for example, the die-holders and carriers and the like into operative and inoperative positions, which requires the use of considerable strength on the part of the operators, and is very tiring as well as being slow, and it has also been the custom to employ two or more men for operating a single machine, and the principal object of our present machine is to eliminate all manual labor in the operation of machines of this class and to provide a machine, the operation of which is started through a suitable clutch mechanism or the like, after which the machine, or the varii as shown at 40.

ous parts thereof, are automatically operated to perform the several functions of the machine in the production of die-castings.

In the accompanying drawings, we have are tracks or rails 22 which extend longi-' tudinally thereof and upon which is movably mounted a supplemental frame 23 provided with rollers or wheels 24 movable over the tracks or ails 22.

Mounted in suitable hearings in the supplernental frame 23 is a cam shaft 25 upon which is mounted two cams 26 provided in the periphery thereof with gear teeth to form gears of said cams, and mounted upon the shaft 25 between the cams 26' are other cams 27 provided in the periphery thereof with gear teeth to form gears thereof. The cams or gears 26 and 27 are adapted to mesh with pinions 28 on an intermediate shaft 29 mounted in the supplemental frame 23.

Secured to the shaft 29 is a gear 30 which is located centrally of' and between the gears 27 and is adapted to mesh with a pinion 31 mounted upon a drive shaft 32 of the machine. A pulley 33 is mounted upon one end of said drive shaft, and said shaft is mounted in suitable bearings 34 on the supplemental frame 23.

A. suitable clutch mechanism 35 is mounted upon the drive shaft 32 and is operated by a yoke 36 adapted to engage the groove of the clutch 35, as clearly shown in Fig. 9 of the drawing, and the yoke is pivoted as shown at 37 to which pivot is connected a clutch operating handle 38 through a connecting rod 39, which has a universal joint connection with the pivot 37 The movement of the handle 38 will cause the clutch 35 to engage the gear 31, causing the rotation of sald gear and the gear 30 on the shaft 29 which will correspondingly rotate the pinions on said shaft and the cams or gears 26 and 27.

On the cam shaft 25 is mounted a cam 41 provided with a recess 42 in the periphery thereof, and a roller 43 is adapted to operate in connection with the cam 41 or the recess 42 thereof, said roller being carried by a plunger 44 supported in the sup plemen'tahframe as shown at 45 and 46, and the roller 43 is normally held in engagement with the cam 41 by a bell crank 47, and a spiral spring 48, the bell-crank 47 being placed in operative connection with the yoke 36 by a connecting rod 48, as clearly shown in Fig. 9 of the drawing, and this mechanism provides means for automatically moving the clutch 35 into an inoperative position on the completion of one revolution of the cams or gears 26 and 27,

' or the completion of one cycle of operation of the machine. An adjusting nut 49 is mounted upon the rod 46 to regulate the tension of the spring 48.

The cams 26 are provided on their faces with cam grooves 50' in connection with which anti-friction rollers 51 carried by, or mounted upon, levers 52 operate, said levers being provided with elongated apertures 53 through which the shaft 25 passes, and the ends of said levers are pivoted to hell cranks 54 as shown at 55, said bell cranks being pivoted as shown at 56, and other bell cranks 57 pivoted at 57 are connected with the bell cranks 54 by a connecting rod 58, which is located between the separate pairs of bell cranks 54 and 57, and said rod is pivoted to the bell cranks 57 as shown at 59 and to the bell cranks 54 as shown at 59*. The bell cranks 54 and 57 are each composed of two halves, as clearly shown in Fig. 17 to facilitate the assemblage of the various parts, it being understood that only one set of the bell cranks are shown in Fig. 17. Pivoted to the bell cranks 54' and 57 at 60 and 61 are fork-shaped members 62 and 63 shown in detail in Fig. 17 and with which are connected turn-buckles 64 and 65 pivoted to a rear die supporting member or holder 66 as shown at 67, and two of the turn-buckles 64 and 65 and the parts connected therewith are employed.

The operation of this mechanism will be readily; understood on a consideration of Figs. 11 to 13 inclusive, in which it will be noted that in one complete cycle or' rotation of the cams 26, the connecting levers 52 are moved forwardly and upwardly, and the bell cranks 54 and 57 are correspondingly operated and the rear die supporting member or holder 66 is caused to move forwardly by the yokes and turn-buckles as hereinafter set out.

The rear die supporting member is mounted upon rollers 68 which run upon the tracks 22 and support the weight of said rear die supporting member.

The bell cranks 54 are provided at 60 with eccentric pivot pins 69, and the bell cranks 57 are provided at 61 with eccentric pins 70, and cranks 71 and 72 are secured to the eccentric pins 69 and respectively and are coupled together by connecting rods 73, and these cranks and connecting rods are located between the separate parts of the bell cranks 54 and 57 as well as the yokes 62 and 63.

Mounted transversely of the main frame of the machine is a shaft 74 on which is mounted a bell crank 75 provided. with backwardly directed fork-shaped members 76 to which are pivotally connected rods77, one of which is shown in detail in Fig. 17 of the drawing, and these rods carry or are formed integral with the cranks 71. The

downwardly directed arm =.78 located centrally between the fork-shaped members 7 6 and with which is pivotally' connected a rod 79. k I

The operation of' the above described mechanism is clearly illustrated in Figs. 11 to 13 inclusive, and it will be apparent on a consideration of said 'figures that in the' complete cycle of operation the die support- 1 ing member or holder 66 is .moved for- .wardly on the frame, and by reason of the eccentric pins 69 and.70 the cranks 71 and 72 will be moved from the position shown in Fig. 12 to-that shown in Fig. 13 to hold the separate parts of the die together under pressure, as hereinafter described, and to -lock the parts temporarily in such position; and to retain the same in suchposition until themolten metal has been passed through the discharge nozzle into the die. 1

In ligs'. 15 and 16 we have shown seetional detail views ofthe mechanism'for advancing the supplemental frame and the various parts mounted in connection there-J withlongitudinally-of the'main frame with the respective parts of said mechanism in different positions. Thisvmechanismcomprises a lever 80 provided with an elongated aperture 81 to permit of its movement upon the cam shaft 25, and this lever is located between the adjacent faces of the cams 27 and is provided with oppositely directed rollers 82 which operate in cam grooves 83 in the abutting faces of said cams. The in- .ner end of the lever80 is pivoted to a lever 84 which is mounted upon-a shaft 85, mounted in suitable bearings86 in the supplemental frame. AnI-bolt 87 is mounted in a yoke 88 mounted to upwardly directed ex 4L0 tensions '89 on the base or main frame 20,

and'mounted on the bolt 87 are two'nuts 90 adapted to regulate the tension of a spring 91 mounted onsaid bolt, and the bolt passes through a cross member 92 in the yoke 88 and is held in,predetermined pbsition by nuts 93..

As above stated, the mechanism shown in Figs. 15- and. 16 is designed to, advance the supplemental frame on the main frame and to movethe die into contact with the molten metal discharge nozzle and to hold the same in such position under thetension of the spring91. The supplemental frame 23 has rigidly connected therewith a stationary'die supportin member orholder 94, the connection wit said'fr'ame being made by four rods95 u onwhich the movable diesupporting mem be'r 66 is movably. mounted, andthe supporting member 945s mounted upon rollers 96- which facilitate the movement of said; supple- V mental'frame longitudinally of the main frame, as above set out.- Mounted in the die supporting member 94 is a hollow nozzle 97 -which is adapted to receive the molten metal discharge nozzle as hereinafter set out,

100 respectivelyand for'the purpose of illus-' tration 'we have indicated a predetermined contour on the adJacent faces of said dies, and have indicated the molten metal passed thereinto.

In -Figs. 4, 5, 6 and 7 of thii drawing, we have shown enlarged views of the rear or furnace end of the machinef'and in said figures we have indicated at 101 a furnade of suitable construction having acomhustion or heat chamber 102 in which any suitable heating element or elements may be mounted for the purpose of heating a molten metal part or container 103 inwhich themolten metal from an outside source is placed to maintain the metal therein at a predetermined level. \Ve also employ a supplemental container 104 which for the purpose of description is called a gooseneck, and this container is clamped in a suitableframe 105 by means of a cap 106 held in positionby bolts 1. 7,-

and the container or gooseneck 10 1 may be ad uSted vertically in the frame 105 by means of a ragk 108 secured to one side of the topportion of the container 101 and a I pinion 109 mounted upon ashaft 110, which extends through one side of theframe and is provided with 'a square end shown in Fig; 7, whereby a wrench or suitable tool may be applied for the purpose of adjusting the position of the supplemental container or oose-neck 104:,

[lpon the-top ofthe furnace is mounted two side frame members 111 in and between which the frame 105 is movablymounted, and the frame members lll are provided with two cam grooves 112 and 113 in which "piyots 114 and 115 respectively are movably mounted, said pivots being-mounted in corn nection with the frame 101') The pivots 111- constitute part of a shaft 110, and this shaft extends through theframe members 111, and mounted in connection therewith are bell cranks 117, one of the arms of each of which are provided with elongated slots 118 in which said shaft operates, and said bell cranks extend through bearings 119 'on the frame members 111 and tothe other arms 120 of which are pivoted connecting rods 121 havin" turn-buckles 122. Mounted transversely of the. main or" base frame, 20 of ,the machine beneath the furnace 101 is a shaft 123, which extends beyond the 'oppositesides of saidframe and arms 124 are clamped thereon, one of which is clearly shown in Fig. 4 ofthe drawing, and the .r s 121 are pivoted to the'f'ree ends of said arms;

Secured to theshaft-123 withinthe base 130 frame 20 is a yoke-shaped arm 125- in..connectionwith whic'hthe rod 79 is pivotally mounted, as clear-1y shown in Fig. 6 of the di'awing.

By means of the bell crank, rod and arm construction above described, the supple mental container 104 may be moved from the position shown in Fig.6 of the drawing to which is coupled to--a suitable pipe 131 shown in Fig. 4 of the drawing, which pipe is connected or coupled with a compressed air supply valve device 132 shown in detail section in Fig. 10 of the drawing.

Thevalve device 132 forms no direct part of our invention but is shown to illustrate one method of controlling the passage of air under pressure to the container 104. The valve device 132 is provided with a compressed air supply pipe 133, which communicates with the chamber 134 of said-valve device, the communication being, controlled by an intake valve 135, and mounted in the valve device is an exhaust valve 136 which communicates with the chamber 134. Pivotally'mounted upon the valve device 132 is a controlling element 137 provided with adjusting screws 138 and 139 adapted to opcrate in connection with the stems of the valves 135 and 136 to control the operation thereof, and the element 137 is held in its normal or inoperative position by a spring 140 in which position of said element the.

exhaust valve 136 is depressed, and pivoted to the element 137 is an operating rod 141 which is adapted to be actuated by an automatic valve tripping mechanism 142 shown diagrammatically in Fig. 14 of the drawing to move the element 137 into the position shown in Fig. 10 to open the intake valve 135. The exhaust valve is employed to relieve the air pressure in the pipes leading to the container 104 as well as the air pressurein said container.

The mechanism 142 shown in detail in Fig. 14 is mounted upon and movable with the supplemental frame and comprises a cam 14%} mounted'upon the shaft 25 and provided with a projection 144 adapted. to operate in connection with a roller 145 on a lever 146 slidably mounted on the shaft 25, said lever being provided with an elon ated aperture 147 through which the shaft 25 passes. d The free end of said lever is pivoted to a bell crank 148' mounted upon a 23, and

stud 149 secured ,to the sup lemental frame F noted to said bel crank is a rod 150, WlllCh extends forwardly and passes through a'bracket 151 movably mounted in connection with the' die supporting member 94, and a spiral spring 152 is mounted upon the rod 150 between the bracket and said supporting member 94 and normally holds the parts of the mechanism 142 in an operative position, andmounted on the front face of the bracket 151.is an adjustin screw 153 which is adapted to strike the en of the rod 141 to operate the element 137 to move the same. into the position shown in Fig. 10 of the drawing. 0 a In Figs. 1 and 2, we have shown ejection rods 154 mounted in connection with hangers 155 on the rods 95 of the supplemental frame. These rods are provided with nuts 154* adjustable thereon to control the movement of said rods, and said rods are adapted to extend through the member 66 and are secured to plates 156 to which plates are secured supplemental ejector rods 157 which extend into the die proper and are adapted to remove the casting therefrom as shown in Fig. 2 of the drawing. At 158 15 shown a hand wheel which is mounted upon the drive shaft 32"which forms a part I of the clutch mechanism by means of which the shaft 32 may be rotated by hand, if desired.

The operation of the machine will be readily understood from the foregoing descrlption when taken in connection with the accompanying drawings and the following statement. The position of the various parts of the machine shown in Fig. 1 are their normal position in which the die supporting members 66 and 94 are in their separated position, and the supplemental frame members 66 and 94 are out of engagement with the furnace 101 and the goose neck or supplemental container 104is in the position shown in Fig. 6 of the drawilig.

If the clutch operatinghandle 38 be operthe members 66 and 94 thereon are moved longitudinally of the main frame, and in the above operation the goose-neck or supplemental container 104 is moved into the position shown in Fig. 7, and at the end of said last named operation the nozzle 97 is moved intoengagement with the discharge nozzle 1.26 and held in firm engagement ice 126, the air valve device 132 is actuated, or.

the parts thereof, moved into the position shown in Fig. 10 to admit air under pressure into the container or goose-neck 104 to force the molten metal therefrom into the contour or core of the dies as shown in Fig. 7 of the drawing. after which-the supplemental frame with the members 66 and 94 are moved backwardly out of engagement with the furnace or the discharge nozzle 126 of the container 104, and as this backward operation continues the dies are separated by the backward movement of the support ing member 66 into the position shown in Fig. 1 in which last operation the casting may be ejected from the die, or one part thereof. In the last named operation, or in the backward movement of the supplemental frame the supplemental container or 'gooseneck 104 returns to the position shown in Fig. 6 to permit of the refilling of said supplemental container withthe molten metal in the main container. t

In the above described operation when the lever 38 is operated to move the clutch into operative position the roller 43 is withdrawn from engagement with the groove 42 and the clutch moved into operative position to permit of the starting of the machine, and when the parts of the supplemental frame have returned to their normal position as shown in Fig. 1, the roller 43 will again drop into the groove 42 of the cam 41 to automatically stop the machine, or to move the clutch 35 into inoperative position.

It will be apparent that the lever 38 may be operated at will to move the clutch into operative and inoperative position to stop and start the machine, whenever desired, and it will also be apparent that the cam 41 and the mechanism operating in connection therewith may be eliminated so that when the machine is once put in operation it will continue to operate until the clutch is manually moved into position to stop the machine, in other words, the machine may continue to operate automatically in the production of die-castings without any manual control, whatever, except to stop and start the machine for examinations, repairs and the like.

It will be apparent on a consideration of Figs. 11, 12 and 13 of the drawing that the die supporting member 66 is moved forwardly into engagement with the die supporting member 94 by the operation of the bell cranks, levers and the like from the position shown in Fig. 11 to that shown in Fig- 12, and said die supporting members 66 and 94 are locked together by a slight additional movement of the cranks 71 and 72 from the position shown in Fig. 12 to that shown in lgligvlfl thus preventing the separation of the dies in the die supportingmembers 66 and 94 in the operation of forcing molten metal thereinto under pressure.

In the several views of the drawing, it

will be noted that certain details of the construction are omitted, broken away or the like in order to simplify the illustration of the mechanisms or operative parts of the machine shown in the separate figures, and while we have shown and described certain details of construction for. carryingour in.- Vention into efi'ect, it will be understood that we are not necessarily limited to the details of construction herein shown and described, and various changes therein and modifications thereof may be made, within the scope of the appended claims, without departing from the spirit of my invention or sacrificing its advantages.

Having fully described our invention,

ment, an automatically operated die holder and carrier movable toward and from said discharge element, and said holder being composed of separate parts movable toward and from each other and to which the separate parts of the die are adapted to be secured in the movement thereof toward and from said element.

2. In a die-casting machine, an. automatically operated molten metal discharge element, an automatically operated die holder and carrier movable toward and from said discharge element, said holder being composed of separate parts movable toward and from each other and to which the separate parts of the die are adapted to be secured in the movement thereof toward and from said element, and means for holding said die parts together.

{3. In a die-casting machine, an automatically operated molten metal discharge element, an automatically operated die holder and carrier movable toward and from said discharge element, said holder being composed of separate parts movable toward and from each other and to which the separate parts of the die are adapted to be secured in the movement thereof toward and from said element, means for holding said die parts together, and means for controlling the operation of said holder and carrier and the separate parts thereof.

4. In a die-casting machine, an automat ically operated molten metal discharge element, an automatically operated die holder and carrier movable toward and from said discharge element, said holder being composed of separate parts movable toward and from each otherand to which the separate parts of the die are adapted to be secured in the movement thereof. towardand from saidl element, means for holding said die parts together, and automatically operated means for forcing molten metal from said element into a die mounted in said holder and carrier.

5. In a die-casting machine, an automatically operated molten metal discharge ele ment, and an automatically operated die holder and carrier the die supporting member of which is movable toward and from said element through a lever mechanism which is adapted to hold a complete 'die mounted in said holder and carrier in firm engagement with said discharge element.

6., In a die-casting machine, an automaticallyoperatedmolten metal discharge element, an automatically operated die holder and carrier the diesupporting member of which is movable toward and from said element throu h a lever mechanism which is adapted to old a complete die mounted in said holder and carrier in firm engagement with said discharge element, and means for controlling the operation of said holder and carrier.

7. In a die-casting machine of the class described, a main molten metal container, a supplemental goose-neck container movably mounted in said main container and provided at its free discharge end wlth a detachable nozzle, means whereby compressed air maybe passed into the supplemental container for discharging molten metal through the discharge nozzle thereof, means for operating said supplemental container, and means for adjusting the position of said supplemental container in its support.

- 8. In a die-casting machine of the class described, a die holder and carrier mechanism movably mounted on said'machine, said mechanism comprlsmg die supporting members movable toward and from each other, means for automatically moving saidmembers together, and means for moving said mechanism on said .machine.

9. In a die-casting machine of the class described, a main frame, a supplemental frame movably mounted on the main frame, die supporting members on said supplemental frame and one of which is movable toward and from the other in the movement ing members in a predetermined position.

12. In a die-casting machine of the class described, a main frame, a supplemental frame movably mounted on the main frame,

die supporting members on said supplemental frame, and one of which is movable toward and from the other, means. involving cam members for automatically operating said members, other means involving cams for automatically moving said supplemental frame on the main frame, means involving levers for retaining said supporting anembers in a predetermined position, and a clutch device for controlling the operation of said supple-mental frame.

13. In a die-casting machine of the class described, a main frame, a supplemental frame movably mounted on the main frame, die supporting members on said supplemental frame and one of which is movable toward and from the other, means involving cam members for automatically operating said members, other means involving cams for automatically moving said supplemental frame on the main frame, means lnvolving levers for retaining said supporting members in a predetermined position, and a clutch device for controlling the operation of said supplemental frame and the die supporting members thereof.

7 14. A die-casting machine, comprising a main frame, a furnace at one end thereof, a molten metal container in said furnace, a discharge element in said container, a supplemental frame movable longitudinally of the main frame and towardand from said furnace, said supplemental frame be ing provided with die supporting members adapted to receive and support suitable dies, and said discharge element being provided with a nozzle in connection with which the dies are adapted to operate.

15. A die-casting machine, comprising a main frame, a furnace at one endthereof, a molten metal container in said furnace, a discharge element .in said container, a supplemental frame movable longitudinally of the main frame and toward and from said furnace, said supplemental frame being provided with die supporting members adapted to receive and support suitable dies,

said discharge element being provided with a nozzle in connection with which the dies are adapted to operate, means for automatically operating said supplemental frame to move the same and the die supporting members thereof toward and from said furnace, and means for automatically moving said discharge element into operative position.

16. A. die-casting machine comprising a main frame, a furnace at one end thereof, a molten metal container in said furnace, a discharge element in said container, a supplemental frame n10 *able longitudinally of the main frame and toward and from said furnace. said supplemental frame being provided with die supporting members adapted to receive and support suitable dies, said discharge element being provided with a nozzle in connection with which the dies are adapted to operate, means for automatically operating said supplemental frame to move. the same and the die supporting members thereo't' toward and from said turnace. means for automatically moving said discharge element into operative position, and means for automatically passing compressed air into said discharge element to discharge the molten metal therefrom.

17. In a die-casting machine of the class described. die supporting members movably mounted in said machine and one of which is movable toward and from the other in the movement of said members, and means for operating said last named member and for firmly holding dies mounted therein and in said other member in engagement with each other. i

18. In an automatically operated die-casting machine of the class described provided with a molten metal discharge element, means for moving a suitable die toward and from said element, meansfor moving said element into operative and-inoperative positions. said first-named means being composed of separate parts, and means for holding the separate parts of a die .together therein and for locking the same against separation.

19. In an automatically operated die-casting machine of the class described provided with a molten metal discharge element, means for moving a suitable die toward and from said clement, means for moving said element into operative and inoperative positions. said first-named means being composed of separate parts, means for holding the separate parts of a die together therein and for locking the same against separation, and means for separating said die parts.

20. In an automatically operated die-casting machine of the class described provided with a molten metal discharge element, means for moving a suitable die toward and from said element, means for moving said element into operative and inoperative positions, said first-named means being composed of separate parts, means for holding the separate parts of a die together therein and for locking the same against separation, means for separating said die parts, and means for'ojecting the casting from one part of said die when said die parts are separated.

21. In an automatically ope 'ated die-casting machine of the class described provided with a molten metal discharge element, means for moving a suitable die toward and from said element, means for moving said element into operative and inoperative positions, said first named means being composed of separate parts, means for holding the separate parts of a die together therein and for locking the same against separation, means for separating said die parts, means for ejecting the casting from one part of said die when said die. parts are separated, and means for manually controlling the operation of the machine.

22. In an automatically operated die-casting machine of the class described provided with a molten metal discharge element, means for moving a suitable die toward and from said element, means for moving said element into operative and inoperating positions, said first named means being composed of separate parts, means for holding theseparate parts of a die together therein and for locking the same against separation, means for separating said die parts, means for ejecting the casting from one part of said die when said die parts are separated, means for manually controlling the operation of the machine, and means for automatically stopping the machine.

23. A die-casting machine comprising automatically operated die supporting members movable toward and from each other, an automatically operated molten metal discharge element in connection with which a die supported in said members is adapted to operate, automatically operated means for forcing molten metal from said element into said die, and means involving a tensional device for holding said die in firm engagement with said element.

24.. A die-casting machine of the class described comprising a. main frame, a supplemental i'rame automatically movable on the main frame, an automatically operated molten metal discharge element, means on said supplemental frame for supporting the separate parts of a die thereon whereby in the movement of said supplemental frame said die may be moved into and out of engagement with said element, and automatically operated means for moving the separate parts of the die toward and from each other.

25. A die-casting machine of the class de- 

